Improvement in gbinding-mills



@uiten faire atut @ffina- THOMAS GREY, OF CLARENCE, NEW YORK, ASSIGNORTO HIMSELF AND HENRY LAPI, OF THE SAME PLACE.

Letters .Patent No. 71,606, dated December 3, 1867.

IMPROVEMENT IN GRIN DING-MILLS. y

@the Stlahule referat tu in tigen Eaters atmtzmh making mrt nt the sume.

TO ALL WHOM` IT MAY CONCERN:

Be it known that I, THOMAS GREY, of Clarence, in the county of Erie, andState of New York, (assigner to himself and Henry Lapp, of the sameplacc,) have invented certain new and useful Improvements in Grinding-Mills; and do hereby de clare that the following is a full and exactdescription thereof', reference being had to the accompanying drawings,making a part of this specification, in which-` Figure I is alongitudinal vertibal section.

Figure His an end elevation.

Figure III is a top plan View.

The nature of this invention consists in the construction and use of acorrugated curved plato, supported in heads or blocks which slide andare adjustable within slots in the main frame, and upon which the saidplate is allowed to swing, the lower end ofthe plate being also madeadjustable by means of a set-screw.

Letters of like name and kind refer to like parts in each of thefigures.

A represents a corrugated roller, of cast or wrought iron, whichrevolves in bearings a formed in the veri tical side plates B. A crank,b1, and a fly-wheel, b2, are placed upon the shaft on opposite sidesofthe roller. C represents a. curved plate, one side of which, beingthat which is contiguous to the rollerA, is alsol corrugated. The upperedge of the plate is extended laterally in a manner to form journalsupon each side thereof, which journals are supported in movablelbearings c. These bearings consist of two sliding heads, which may beadjusted in any desired position within the horizontal slots c2 formedin theside plates B, by means of thesetscrews d d. One of theseset-screws bears against each side of the bearing el in a manner to holdthe same firmly in any desired position. The lower end of the plate Cbeing allowed to swing upon the journals above mentioned, is also madeadjustable independent of the top edge thereof. VE represents across-brace, interposed transverselyrbetween the side plates B in aposition opposite the lower end of the plate C, and connected firmly to'said side plates. F represents a set-screw, passing through the centreof said bracc'E, and bearing against the back ofthe plate C. It willreadily Abe seen that the top end of the plate C may be adjusted in anydesired proximity to the periphery ofthe roller A,independent ofthelower end of the plate; the former being supported in itsjournal-bearings al, and held in place by the set-screws d d', and thelatter swinging in said bearings, and

being held in place by means ofthe set-screw F. G represents a hopper,located above the roller and plate in a mannerito guide the corn, wheat,or other article to be ground between the two.

The construction and adjustability of the plate, as hereinabovedescribed, enable the operator to set or arrange Vthe mill for grindingdi`erentsized articles, and reducing them to any desired ineness withthe greatest ense and dispatch.

What I vclaim as my inventon,'and desire to secure by Letters,` Patent,is

The corrugated plate C, attached to the sliding journal-bearings c1, andadjusted by means of the set-screws d, d', and F, for the purpose andsubstantially as herein described.

THOMAS GREY.

Witnesses:

B. H. MUEBLE, Enw. WILHELM.

